COMPRESSORS, GAS TURBINES AND JET ENGINES QUIZ

Diffuser inlet radius

Impeller inlet radius

Diffuser outlet radius

Impeller outlet radius

10 bar

30 bar

50 bar

20 bar

Duralumin

High alloy steel

Timken, Haste alloys

Stainless steel

Brayton or Atkinson cycle

Rankine cycle

Ericsson cycle

Carnot cycle

Closed cycle

Closed cycle & Open cycle

Open cycle

Closed/open depending on other considerations

All of these

The combustion chamber in a rocket engine is directly analogous to the reservoir of a supersonic wind tunnel

The stagnation conditions exist at the combustion chamber

The exit velocities of exhaust gases are much higher than those in jet engine

Heated

Exhaust gases drive the compressor

Bled gas from turbine is heated and readmitted for complete expansion

Compressed air before entering the combustion chamber is heated

Same

None of these

Higher

Lower

5%

0.1%

0.5%

1.0%

Rotor to static enthalpy rise in the stage

Rotor to static enthalpy rise in the stator

Stator to static enthalpy rise in the stage

Stator to static enthalpy rise in the rotor